Installation fails for statsforecast due to llvmlite Python version constraint

[asdf8601]

Description

When trying to install statsforecast using uv, the installation fails due to
a Python version constraint in llvmlite==0.36.0.

  RuntimeError: Cannot install on Python version 3.10.15; only versions >=3.6,<3.10
  are supported.

Environment

• Python version: 3.10.15
• uv version: 0.5.4 (c62c83c 2024-11-20)
• Operating System: macOS

Steps to Reproduce

1. Create a new virtual environment with uv
2. Install numpy and statsforecast
   • uv pip install numpy statsforecast
   • uv add numpy statsforecast

Workarounds

Adding dependencies one by one:

# In this order, the opposite results in the same error.
uv add statsforecast
uv add numpy

Using python-venv and pip works fine:

$ python -m venv .venv-pip

$ ./.venv-pip/bin/pip install numpy statsforecast -q -I

[notice] A new release of pip is available: 23.0.1 -> 24.3.1
[notice] To update, run: python -m pip install --upgrade pip

Log

$ python -V
Python 3.10.15

$ uv version
uv 0.5.4 (c62c83c37 2024-11-20)

Installing numpy and statsforecast

$ uv python pin 3.10

$ uv venv

$ . .venv/bin/activate

$ uv pip install numpy statsforecast
Resolved 14 packages in 17ms
  × Failed to download and build `llvmlite==0.36.0`
  ╰─▶ Build backend failed to determine requirements with `build_wheel()` (exit status: 1)

      [stderr]
      Traceback (most recent call last):
        File "<string>", line 14, in <module>
        File
      "/Users/asdf8601/.cache/uv/builds-v0/.tmppKvNui/lib/python3.10/site-packages/setuptools/
build_meta.py",
      line 334, in get_requires_for_build_wheel
          return self._get_build_requires(config_settings, requirements=[])
        File
      "/Users/asdf8601/.cache/uv/builds-v0/.tmppKvNui/lib/python3.10/site-packages/setuptools/
build_meta.py",
      line 304, in _get_build_requires
          self.run_setup()
        File
      "/Users/asdf8601/.cache/uv/builds-v0/.tmppKvNui/lib/python3.10/site-packages/setuptools/
build_meta.py",
      line 522, in run_setup
          super().run_setup(setup_script=setup_script)
        File
      "/Users/asdf8601/.cache/uv/builds-v0/.tmppKvNui/lib/python3.10/site-packages/setuptools/
build_meta.py",
      line 320, in run_setup
          exec(code, locals())
        File "<string>", line 55, in <module>
        File "<string>", line 52, in _guard_py_ver
      RuntimeError: Cannot install on Python version 3.10.15; only versions >=3.6,<3.10
      are supported.

  help: `llvmlite` (v0.36.0) was included because `statsforecast` (v0.7.1) depends on
        `numba` (v0.53.1) which depends on `llvmlite`

[charliermarsh]

Thanks for the write-up. This is a case of #8157 and is explained in there. We'll improve it soon.

[asdf8601]

Nice, thank you! I've opened this issue for two main reasons: the first one is that I wasn't 100% sure that #8157 was the same issue, and second, to provide an alternative for other devs as #8157 didn't help me in that way :-)

[lmmx]

Just to clarify for anyone else landing on this, in case the workaround is unclear; a working solution is to just pip install then grep pip list for the offending package's version + then pin that (in this case llvmlite==0.43.0).

• Problem: cannot uv run --with jupyter jupyter lab because llvmlite gets set to 0.36.0

  × Failed to build `llvmlite==0.36.0`                                                                                                                                               

• Cheat: run pip install llvmlitein your venv, thenpip list | grep llvmlite` which shows the version 0.43.0 gets installed
• Solution: run uv add llvmlite>=0.43.0 to your project, then either uv add jupyter or uv run --with jupyter jupyter lab work